udhcpc: reuse string constant; remove unneeded memset(0)

[oweals/busybox.git] / networking / pscan.c

diff --git a/networking/pscan.c b/networking/pscan.c
index a9e5d5c29fecf842be9cfcebfd84850708b9ccd7..28005ad57ee2056d858c86f7b5d535563a5509b9 100644 (file)
--- a/networking/pscan.c
+++ b/networking/pscan.c
@@ -6,6 +6,17 @@
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
+//usage:#define pscan_trivial_usage
+//usage:       "[-cb] [-p MIN_PORT] [-P MAX_PORT] [-t TIMEOUT] [-T MIN_RTT] HOST"
+//usage:#define pscan_full_usage "\n\n"
+//usage:       "Scan a host, print all open ports\n"
+//usage:     "\n       -c      Show closed ports too"
+//usage:     "\n       -b      Show blocked ports too"
+//usage:     "\n       -p      Scan from this port (default 1)"
+//usage:     "\n       -P      Scan up to this port (default 1024)"
+//usage:     "\n       -t      Timeout (default 5000 ms)"
+//usage:     "\n       -T      Minimum rtt (default 5 ms, increase for congested hosts)"
+
 #include "libbb.h"
 
 /* debugging */